Abstract: When an access device accesses a nonvolatile memory device, the nonvolatile memory device or the access device detects or calculates a temperature T of the nonvolatile memory device. A temperature-adaptive control part of the nonvolatile memory device controls an access rate to a nonvolatile memory on the basis of the temperature T. Accordingly, the control part controls the rate so that the temperature T of the nonvolatile memory devices cannot exceed a limit temperature Trisk. In this manner, a nonvolatile memory system can eliminate a risk of a burn when ejecting the semiconductor memory device and can read and write data at a high speed.

Abstract: Power consumption required for making a nonvolatile storage device having a radio communication function operate as a file server for a radio host device is great for a host device which supplies the power. The present invention enables a user to operate a host device to which the nonvolatile storage device having the radio communication function is attached so as to activate and inactivate the radio communication function of the nonvolatile storage device. This reduces unnecessary power consumption by the radio communication function.

Abstract: In the case where a plurality of types of attribute information and a plurality of types of menu screen information of different formats are recorded on a nonvolatile recording medium by a plurality of types of terminal devices, the display device cannot determine which information is to be processed. This makes it difficult for the user to view images or the like. A terminal device 1001 according to the present invention generates user data 2004 such as image information, living body information or the like and attribute information 2005 representing attribute of the generated user data 2004. The terminal device 1001 records, on the nonvolatile recording medium 1002, control information 2006 corresponding to the attribute information 2005 and representing a procedure of displaying the user data 2004 by a display device 1003.

Abstract: A method for use in a nonvolatile storage device that can resize one or more partitions prevents an address management table from becoming complicated after repeated resizing of partitions. When a partition is resized, a logical-to-physical conversion table is updated by shifting a physical block address corresponding to a partition subsequent to the resized partition by the resized amount of the partition. The method enables both logical addresses corresponding to partitions and logical addresses not corresponding to partitions to be constantly continuous to one another.

Abstract: In the case where rate information is not transmitted on an input bit stream, it was difficult to efficiently record the input bit stream in accordance with the rate of the input bit stream. Therefore, a data recording apparatus is realized which comprises: signal processing means of coding the input bit stream to a recording signal; a packet counter section that counts the number of packets serving as constituting units of the input bit stream, for a fixed time period; a system controller that controls a recording rate on a tape-like recording medium; and recording means of recording the recording signal on the tape-like recording medium, and which is configured so as to calculate the rate of the input bit stream from an output of the packet counter section to control the recording rate, whereby recording can be efficiently conducted in accordance with the rate of an input signal.

Abstract: A right information encryption module 110a comprises a key generation part 111a, a right information encryption part 112a, and a key management information generation part 113a. Key information Km and key management information Mm corresponding to right information are generated and then recorded into a secret recording module 130a. In addition, the right information is encrypted, and then the encrypted right information Enc_a (ROm, Km) and the key management information Mm are recorded into a recording module 140a. This can eliminate the possibility of a capability shortage of a secret area caused by an increase in the data size of the right information including the key information and use restriction information for a content.

Abstract: When an access device accesses a nonvolatile memory device, the nonvolatile memory device or the access device detects or calculates a temperature T of the nonvolatile memory device. A temperature-adaptive control part of the nonvolatile memory device controls an access rate to a nonvolatile memory on the basis of the temperature T. Accordingly, the control part controls the rate so that the temperature T of the nonvolatile memory devices cannot exceed a limit temperature Trisk. In this manner, a nonvolatile memory system can eliminate a risk of a burn when ejecting the semiconductor memory device and can read and write data at a high speed.

Abstract: A semiconductor memory card is provided with a transmitting and receiving circuit of a plurality of transmission systems such as a single-end signaling transmitting and receiving unit and a differential signaling transmitting and receiving unit. When power is turned on, each transmitting and receiving unit is turned on. When a command is provided from a host device, a command processing unit judges the transmission system provided in the host device, based on reception results of each circuit. Then, only a transmitting and receiving unit of the system identical to the transmission system used for transmission is turned on, and the subsequent data transmission is performed. Thus, the semiconductor memory card provided with a plurality of transmission systems performs transmission by simply identifying the transmission system provided in the host device.

Abstract: Power consumption required for making a nonvolatile storage device having a radio communication function operate as a file server for a radio host device is great for a host device which supplies the power. The present invention enables a user to operate a host device to which the nonvolatile storage device having the radio communication function is attached so as to activate and inactivate the radio communication function of the nonvolatile storage device. This reduces unnecessary power consumption by the radio communication function.

Abstract: A nonvolatile memory device comprises a nonvolatile memory and a memory controller. The nonvolatile memory includes the same memory cells striding over a plurality of pages. A page information instruction part has the page structure information of the nonvolatile memory. According to this information, a related page identification part identifies a page (related page) in which the data may change. The relation data stored in the related page are temporarily stored into a save memory before an error occurs, and if an error exists, these relation data are used to repair the data that have changed. By this method, in a memory device using a nonvolatile memory including the same memory cells striding over a plurality of pages, even if an error occurs during data writing, the error is repaired and the reliability can be ensured.

Abstract: A method for converting a data stream in a first format into a data stream in a second format is provided. Each stream includes data packs in which video/audio data are stored and a control pack for use in a playback control of the stream. In the first format stream, address information, representing addresses of the data packs and not required while the stream is played back, is present and associated with the stream. In the second format stream, address information, representing addresses of the data packs and required while the stream is played back, is stored in the control pack. The method includes the steps of: acquiring the first format stream and its associated address information; generating a second control pack in the second format from a first control pack in the first format, the second control pack storing the address information acquired; and replacing the first control pack with the second control pack, thereby generating the second format stream from the first format stream.

Abstract: A method for converting a data stream in a first format into a data stream in a second format is provided. Each stream includes data packs in which video/audio data are stored and a control pack for use in a playback control of the stream. In the first format stream, address information, representing addresses of the data packs and not required while the stream is played back, is present and associated with the stream. In the second format stream, address information, representing addresses of the data packs and required while the stream is played back, is stored in the control pack. The method includes the steps of: acquiring the first format stream and its associated address information; generating a second control pack in the second format from a first control pack in the first format, the second control pack storing the address information acquired; and replacing the first control pack with the second control pack, thereby generating the second format stream from the first format stream.

Abstract: A digital signal recording and reproducing apparatus has the following components: a digital information decoding circuit for outputting (a) a received digital information signal by selecting a channel, and (b) a first analog signal by selecting and decoding either one of a selected digital information signal, and a reproduced digital information signal of a recording medium; a recording and reproducing unit for outputting a reproduced digital signal, comprising (a) a digital signal recording unit for inputting the digital information signal of the channel selected and output by the digital information decoding circuit, and for recording on the recording medium, (b) a digital signal reproduction unit for reproducing the digital signal recorded on the recording medium, and (c) a first recording and reproduction unit for recording and reproducing an externally input analog video/audio signal on the recording medium as a second analog signal; a bus line for transmitting (a) the digital information signal of the

Abstract: In the case where rate information is not transmitted on an input bit stream, it was difficult to efficiently record the input bit stream in accordance with the rate of the input bit stream. Therefore, a data recording apparatus is realized which comprises: signal processing means 4 of coding the input bit stream to a recording signal; a packet counter section 3 that counts the number of packets serving as constituting units of the input bit stream, for a fixed time period; a system controller 6 that controls a recording rate on a tape-like recording medium 8; and recording means 5 of recording the recording signal on the tape-like recording medium 8, and which is configured so as to calculate the rate of the input bit stream from an output of the packet counter section 3 to control the recording rate, whereby recording can be efficiently conducted in accordance with the rate of an input signal.

Abstract: A reproduced signal from a recording medium 1 is equalized at partial response (1, 0, -1) by a reproducing equalizer 3, and is converted into a reproduced and equalized signal. A clock reproducing circuit 4 issues a reproduced clock synchronized with the timing of data identification, and applies it to a phase adjusting circuit 5. A phase control signal generating circuit 6A detects a specific pattern from a reproduced digital signal issued from an A/D converter 7, and the advance or delay amount of phase of the reproduced clock is detected by the amplitude or distribution of the sampling value. This phase deviation amount is given to the phase adjusting circuit 5 as a phase control signal. The phase adjusting circuit 5 given a delayed clock to the A/D converter 7, and controls to A/D convert the reproduced signal at correct timing.

Abstract: An automatic phase control apparatus for controlling the frequency of a sine wave produced from a variable frequency oscillator to be equal to that of the carrier wave of the extracted chrominance signal. A phase difference detector 4 detects a phase difference between the sine wave and the carrier wave. The detected phase difference is integrated to obtain an integrated value which is applied to the frequency oscillator for determining the oscillation frequency. A deviation detector is provided for detecting a deviation of the integrated value with respect to an expected frequency control data calculated by a calculator. When the deviation is greater than a predetermined range, the integrated value is replaced with the calculated data.

Abstract: A television standards conversion includes circuitry for generating first and second clocks. Time-axis compression and field frequency conversion circuitry is provided for performing time-axis compression on a signal and converting a field frequency of the 625/50 television standards to a field frequency of the 525/60 television standards by writing a digitized component signal of 625/50 television standards into a first digital memory having only one output port with the first clock and reading the signal from said first digital memory with the second clock. Scanning line interpolation circuitry is provided for performing scanning line interpolation processing for converting odd/even field attribute and converting spatial positions of scanning lines on the signal compressed on the time axis and converted in field frequency.